If this policy is enabled, policies coming from the an atomic group that do not share the source with the highest priority from that group will be ignored.
If this policy is disabled, no policy will be ignored because of its source. Policies will be ignored only if there is a conflict and the policy does not have the highest priority.
If this policy ist set from a cloud source, it cannot target a specific user
|Registry Hive||HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER|